The most surprising response I heard from NFL contacts was Clay. He's not nearly the physically dominant player that others on this list are, but he's wildly versatile. He's nearly 260 pounds, plays from the backfield as a short-yardage ball carrier and lead blocker, can play on the end of the line as a tight end, can flex out into the slot and has terrific catching skills. Any player who can align from so many spots leaves a defensive coordinator wondering how best to slow him down.